Finding the Fourth Proportional to 97,439.20, 134,466.10 and 55,000.47
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Solution
The fourth proportional to 97,439.20, 134,466.10 and 55,000.47 is: 75,900.65
Step by Step Solution
- Step 1: Write the proportion equation
97,439.20 : 134,466.10 = 55,000.47 : x - Step 2: Convert to fraction form
97,439.20/134,466.10 = 55,000.47/x - Step 3: Cross multiply
97,439.20x = 134,466.10 × 55,000.47 - Step 4: Simplify right side
97,439.20x = 7,395,698,464.13 - Step 5: Solve for x
x = 7,395,698,464.13/97,439.20 - Step 6: Final answer
x = 75,900.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.